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bad mpg figures

wetdog

Well-Known Member
Joined
March 7, 2008
Messages
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City, State
leigh,lancs
Year, Model & Trim Level
2000 v north face
g'day one and all, a couple of weeks back i disconnected my battery to re set the ecu and my mpg has fallen from 14 to around 8 mpg. the whole car now reeks of petrol, whats happened?

ta, mick.
 



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how did you drive it after reset? have you cleaned the maf before doing it?
 






Have you done an OBDII scan to check O2 sensor function?
 






afternoon fella's, MAF was cleaned before i did it, and the vehicle was driven sensibly.
i am in the process of borrowing a code reader in the next day or two, cant afford one right now, but my engine light is'nt on, so i dont know if there will be any codes?

the car is still running a little ropey, but the smell of fuel is very strong since the reset and not evident before.

mick.
 






With the O2 sensors you are not looking for codes but function.
 






With the O2 sensors you are not looking for codes but function.

tthanks for your input fella, but i dont know how to check for 'function'. will this come up on a scan?

mick.
 






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